DescriptionThe STD-TE 72 Two Roller Machine has two motors, one to provide the input power and one
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The STD-TE 72 Two Roller Machine has two motors, one to provide the input power and one to absorb the transmitted power. The design is of the “over-hung” roller type, with test rollers fitted over-hung on the end of the machine test spindles, as opposed to the “fully supported” arrangement, in which the test rollers are mounted on shafts between bearings, as with the STD-TE 74 Two Roller Machine.
Technical Specifications – STD-TE 72S
| Standard Two Roller Configuration | |
| Type: | Circulating power |
| Overhung roller | |
| Spindles opposed | |
| Variable shaft centre distance | |
| Contact: | Line, point or elliptical contact |
| Geometry: | Roller on Roller |
| Maximum Skew Angle: | +/-3 degrees |
| Test Conditions: | Pure Rolling |
| Sliding/Rolling | |
| Environment: | Dry & Lubricated |
| Maximum Roller Diameter: | 120 mm |
| Minimum Roller Diameter: | 50 mm |
| Maximum Shaft Centre Distance: | 120 mm |
| Minimum Shaft Centre Distance: | 50 mm |
| Maximum Roller Thickness: | 30 mm |
| Maximum Load: | 5 kN |
| Slide-Roll Ratio: | 0 – 200 % (pure rolling to pure sliding) |
| Roller Temperature: | Ambient to 150°C |
| Temperature Measurement: | Qty 2: Non-contact IR |
| Maximum Motor Power: | 7.5 kW @ 1500 rpm |
| Maximum Motor Speed: | 3000 rpm |
| Drive Ratios: | 2:1. 1:1. 1:2 |
| Maximum Roller Speed: | 6000 rpm with 2:1 Belt Ratio |
| Maximum Torque 2:1 Belt Ratio: | 24 Nm @ 3000 rpm |
| Maximum Torque 2:1 Belt Ratio: | 12 Nm @ 6000 rpm |
| Maximum Torque 1:1 Belt Ratio: | 48 Nm @ 1500 rpm |
| Maximum Torque 1:2 Belt Ratio: | 96 Nm @ 750 rpm |
| Indexing Roller on Drum | |
| Contact: | Elliptical contact |
| Geometry: | Indexing Roller on Drum |
| Maximum Drum Diameter: | 60 mm |
| Minimum Drum Diameter: | 50 mm |
| Maximum Roller Diameter: | 120 mm |
| Minimum Roller Diameter: | 100 mm |
| Maximum Axial Travel: | 30 mm |
| Controlled Parameters | Motor speed |
| Motor speed difference | |
| Applied load | |
| Test duration | |
| Measured Parameters | Motor speed |
| Motor speed difference | |
| Number of revolutions | |
| Applied load | |
| Transmitted torque | |
| Electrical Contact Resistance | |
| Roller surface temperature (dry) | |
| Roller surface temperature (dry) | |
| Vibration sensor output | |
| Calculated Parameters | Traction force |
| Coefficient of Traction | |
| Friction Power | |
| Services | |
| Electricity: | 380/415V, three phase plus neutral, 50/60 Hz, 16 kW |
| Clean, dry air: | 4 cfm at 8 bar (120 psi) |
| Mains water and drain: | 10 l/min (typical) |
Technical Specifications – STD-TE 72H
| Standard Two Roller Configuration | |
| Type: | Circulating power |
| Overhung roller | |
| Spindles opposed | |
| Variable shaft centre distance | |
| Contact: | Line, point or elliptical contact |
| Geometry: | Roller on Roller |
| Test Conditions: | Pure Rolling |
| Sliding/Rolling | |
| Environment: | Dry & Lubricated |
| Standard Roller Diameter: | 60 to 120 mm |
| Maximum Roller Diameter: | 120 mm |
| Minimum Roller Diameter: | 60 mm |
| Maximum Shaft Centre Distance: | 120 mm |
| Minimum Shaft Centre Distance: | 60 mm |
| Maximum Roller Thickness: | 20 mm |
| Maximum Load: | 21 kN |
| Slide-Roll Ratio: | 0 – 200 % (pure rolling to pure sliding) |
| Roller Temperature: | Ambient to 150°C |
| Temperature Measurement: | Non-contact IR |
| Maximum Roller Speed: | 3000 rpm |
| Continuously Variable: | 0 to 3000 rpm |
| Maximum Motor Power: | 30 kW @ 1500 rpm |
| Maximum Motor Speed: | 3000 rpm |
| Maximum Roller Spindle Speed: | 3000 rpm |
| Base Speed: | 1500 rpm |
| Drive Ratio: | 1:1 |
| Maximum Torque at 1500 rpm: | 190 Nm |
| Maximum Torque at 3000 rpm: | 95 Nm |
| Maximum Surface Speed (150 mm Roller): | 11 ms-1 |
| Drive Ratio: | 2:1 |
| Maximum Torque at 1500 rpm: | 95 Nm |
| Maximum Torque at 3000 rpm: | 47.5 Nm |
| Maximum Surface Speed (150 mm Roller): | 22 ms-1 |
| Maximum Axial Travel: | Nil |
| Controlled Parameters | Motor speed |
| Motor speed difference | |
| Applied load | |
| Test duration | |
| Measured Parameters | Motor speed |
| Motor speed difference | |
| Number of revolutions | |
| Applied load | |
| Transmitted torque | |
| Electrical Contact Resistance | |
| Roller surface temperature (dry) | |
| Roller surface temperature (dry) | |
| Vibration sensor output | |
| Calculated Parameters | Traction force |
| Coefficient of Traction | |
| Friction Power | |
| Services | |
| Electricity: | 380/415V, three phase plus neutral, 50/60 Hz, 75 kW |
| Clean, dry air: | 4 cfm at 8 bar (120 psi) |
| Mains water and drain: | 10 l/min (typical) |
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